[259] James Beattie, LL.D., Professor of Moral Philosophy, Marischal College, Aberdeen. His essay on “The Nature and Immutability of Truth,” alluded to by Boswell, was published in 1770. Dr. Beattie died on the 6th October, 1802. [260] Sir Adam Fergusson, Bart., of Kilkerran, LL.D., was eldest son of Sir James Fergusson, Bart., a judge of the Court of Session by the title of Lord Kilkerran. Elected M.P. for Ayrshire in 1774, Sir Adam continued to represent that county for eighteen years. He afterwards sat for the county of Edinburgh. By the House of Lords he was found to be heir-general to Alexander, tenth Earl of Glencairn. He died 23rd September, 1813. That he was “great-grandson of a messenger” is not historically borne out. His paternal great-grandfather was Simon Fergusson of Auchinwin, youngest son of Sir John Fergusson of Kilkerran, Knight. [261] The seat of John, fourth Earl of Loudoun. [262] Major Andrew Dunlop was second son of John Dunlop, of Dunlop, Ayrshire. He served in the American war, and afterwards commanded the Ayrshire Fencibles. He died in 1804. His mother was Frances Anne, daughter and heiress of Sir Thomas Wallace of Craigie. She was a friend and correspondent of the poet Burns. [263] David Kennedy was admitted advocate in 1752. He was elected M.P. for Ayrshire in 1768. In 1775 he succeeded his elder brother as tenth Earl of Cassilis, and died 18th December, 1792. [264] David Rae was called to the bar in 1751, and soon obtained reputation as a lawyer. He was appointed a judge in succession to Lord Auchinleck in November, 1782, and was promoted as Lord Justice Clerk in 1799. He was created a baronet in 1804. He died the same year, aged eighty. [265] John Swinton, son of John Swinton of Swinton, was admitted advocate in 1743. After several professional preferments he was raised to the bench as Lord Swinton in 1782. He published an abridgment of statutes relating to Scotland, and other works. He died 5th January, 1799. [266] John Hamilton, of Sundrum, was for thirty-six years Convener of the county of Ayr. He died in 1821 at a very advanced age. [267] James Burnett, of Monboddo, was admitted advocate in 1737. After a brilliant and successful career at the bar, he was raised to the bench in 1767 as Lord Monboddo. He visited London every year, accomplishing the journey on horseback. Introduced at court, he was especially honoured by George III., who much relished his conversation. An accomplished scholar, he cherished some strange ideas regarding the origin of mankind. Of his several works the most notable is his “Origin and Progress of Language.” He died on the 26th May, 1799, aged eighty-five.